html,
body,
ul,
ol,
dl,
div,
h1,
h2,
h3,
h4,
h5,
h6,
p,
input,
button,
textarea,
span,
a {
    padding: 0;
    margin: 0
}

a,
a:hover {
    text-decoration: none;
    color: #000;
}

input,
button {
    outline: none;
    border: 0;
}

img {
    border: 0;
    vertical-align: middle;
}

ul,
ol {
    list-style: none;
}

i,
em {
    font-style: normal;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix::before,
.clearfix::after {
    content: "";
    display: block;
    clear: both;
}


/* 版心 */

.w {
    width: 1200px;
    margin: 0 auto;
}